Create Your Own Stylophone: A DIY Electronic Instrument for Just $12

Create Your Own Stylophone: A DIY Electronic Instrument for Just $12

Project Name: PCB Electronic Instrument

Project Author: Modified Workshop Director

Introduction

Before we look at today's open-source recommendation, let's understand what a Stylophone is.

Create Your Own Stylophone: A DIY Electronic Instrument for Just $12

Stylophone is an electronic instrument. It was all the rage in the 1970s.

In fact, its creation was a coincidence; an enthusiast came up with the idea while repairing a toy keyboard for their child.

Not only did

Lightweight Embedded System Framework: mr-library Overview

Introduction to mr-library

mr-library is a lightweight framework for embedded systems that provides a unified low-level driver device model and basic service functions. It features modular design, configurability, and extensibility, helping developers quickly build embedded applications.

The mr-library framework supports basic kernel functions such as mutexes and object management. It integrates asynchronous event-driven frameworks (events), multi-timer software timers (soft-timer), and other services. It provides driver device models for common peripherals such as serial ports, SPI, I2C, ADC/DAC, allowing access to underlying hardware

The Best Fanless Laptops Available Today

Remember at the beginning of 2020, Apple updated the MacBook Air, bringing back the scissor-switch keyboard. I was so excited that I bought a low-spec i3 version, which I have been using ever since.

In the same year, the M1 version of the MacBook Air was released. It has no fan, yet it achieves lower temperatures and higher performance. However, many professional software still needs to run through Rosetta 2 translation, and full ARM compatibility still has a long way to

Deploying OpenWrt 23.05.3 on VMware ESXi

Deploying OpenWrt 23.05.3 on VMware ESXi

Total: 1234 words, 38 images,Estimated reading time: 2 minutes

Previously, OpenWrt was deployed on VMware Workstation (Deploying the latest version of OpenWrt 23.05.3 on VMware Workstation). If you want to deploy OpenWrt directly on ESXi, you will find that the conversion of the image cannot directly generate OVF or OVA files, and ESXi also has recognition problems when directly using the converted disk. Therefore, currently, you can only first deploy the disk image to

Raspberry Pi 5: Highlights of the RP1 Chip Designed In-House

RP1: the silicon controlling Raspberry Pi 5 I/O, designed here at Raspberry Pi

Raspberry Pi 5 is the most complicated, and expensive, engineering program we’ve ever undertaken at Raspberry Pi, spanning over seven years, and costing on the order of $25 million. It’s also our first flagship product to make use of silicon designed in-house here at Raspberry Pi, in the form of the RP1 I/O controller.

Raspberry Pi 5: Highlights of the RP1 Chip Designed In-House

RP1 is an incredibly

Overview of Open Source Processors and SoCs Based on RISC-V Architecture

Overview of Open Source Processors and SoCs Based on RISC-V Architecture

Author: Lei Silei, EETOP CPU Forum Moderator, Username: leishangwen,This article is from the author's blog, the link can be clicked to read the original article.

RISC-V is an open-source instruction set architecture designed and released by the University of California, Berkeley (hereinafter referred to as UCB). Its goal is to become the Linux of the instruction set architecture field, with applications covering numerous fields such as IoT (Internet of

Opportunities in the Trillion-Level IoT Market? Defining the Market is Key

Opportunities in the Trillion-Level IoT Market? Defining the Market is Key

Opportunities in the Trillion-Level IoT Market? Defining the Market is Key

For companies related to IoT, including computing hardware, software, systems integration, data analysis, communication, and professional services, clearly defining the Internet of Things is crucial to determining their market opportunities. According to analysis by Strategy Analytics, the market size encompassing all IoT elements was $150 billion in 2016 and is projected to grow to $550 billion

Design of VGA/LCD Display Controller Based on FPGA (With Code)

Design of VGA/LCD Display Controller Based on FPGA (With Code)
Welcome to the FPGA technology community. The community is vast, and meeting is fate. You can follow the FPGA technology community to obtain other resources of interest in the "adventuring" and "heroic deeds" sections, or chat over drinks.

Today, we bring you the design of a VGA/LCD display controller based on FPGA. Due to the length, it is divided into three parts. Today we present the third part, which includes

What to Do When Your Computer Only Fans Run After Booting?

What to Do When Your Computer Only Fans Run After Booting?

When you power on your computer and only the fans are running, with no response from the monitor, it certainly indicates a hardware issue. The best approach is to use a process of elimination to identify the problem. Here’s how:

1. Press the Caps Lock key on the keyboard. If the light turns on, it indicates a fault with the graphics card, monitor, or other hardware.

2. If the keyboard

Raspberry Pi 400 Review: Faster CPU, New Layout, Better Cooling

Raspberry Pi 400 Review: Faster CPU, New Layout, Better Cooling

Raspberry Pi 400 Review: Faster CPU, New Layout, Better Cooling

The Raspberry Pi 400 is essentially a Raspberry Pi 4 built into a keyboard. This great concept takes me back to my first personal computer. Of course, in the spirit of Raspberry, the complete kit is quite reasonably priced at around $100 (RMB: 660.8). Here are the details provided by Pi Hut:

The Pi 400 packs all the powerful

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